Added domain to url var
Added domain to url var

Grabbed the base domain from matrix.settings and prepended it to url so that fully qualified urls are displayed for each piece of content. Fixes #25.
codeforamerica/city-analytics-dashboard,CodeforHawaii/city-analytics-dashboard,codeforamerica/city-analytics-dashboard,milafrerichs/city-analytics-dashboard,codeforamerica/city-analytics-dashboard,CodeforHawaii/city-analytics-dashboard,milafrerichs/city-analytics-dashboard,milafrerichs/city-analytics-dashboard,CodeforHawaii/city-analytics-dashboard